In Reply to: tractor jack posted by dexterdraco on April 07, 2019 at 18:51:16:
As mentioned, no, these nifty tools are no longer made as is with all vintage equipment except for a handful of tillage and baler parts. Add too the fact that OSHA would not allow it. The plans we have here were put together years ago by a guy, Skip White I believe, aka 'Cargo Cult'. You assume all responsibility if you make your own. Here is a scan of the original operating instruction sheet from our MANUALS library so download and keep it handy regardless if you buy a used one or make your own. These work great for changing out tires/wheels -it's fast and easy once you know how to use it. There weren't that many made but seem to pop up all the time in ads and internet auction sites. I have seen these go at farm auctions for $25. Some are not complete -they are missing the front bracket and/or the attached chain. The most desirable units have a Dearborn ID Tag, an earlier Ferguson-Sherman tag, or an extremely rare K-P MFG tag. When Ferguson went to England to build his TE-20 tractor, he stole the prints for the K-P jack and had his own built there too.